What is the major river that flows through the Grand Canyon?

A:

Quick Answer

The Colorado River is the major body of water that flows through the Grand Canyon. Two dams affect the flow of the river through the canyon: the Hoover Dam at the lower end of the canyon and the Glen Canyon Dam at the upper end, according to Arizona State University.

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The river's headwaters are found at Colorado's Rocky Mountain National Park, according to About.com. The river travels throughout the Southwest, including the 217-mile length of the Grand Canyon, before reaching Mexico. Individuals who wish to travel along the river through the canyon need a permit for the trip, according to the National Park Service.